We did the same with my father during his last months. Someone needed to be with him 24/7 and my step-mother was simply not up to the task but would not allow a "stranger" to do the care-giving. That meant my brother and I did the bulk of his care-giving. I wasn't so much of a big deal with my brother, since he lived only 15 minutes away. My round-trip was 250 miles and we alternated weeks staying with Dad. My wife was left in Starkville during my "week" and it was a real hardship on us both. I never resented the bell. It sometimes was a help but often was forgotten as Dad slept more and more. I don't know what became of the bell.
